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8020775: PPC64 (part 12): posix signal printing

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Implement methods printing posix signal information and call them in unix os files.

Reviewed-by: kvn, dholmes, twisti
This commit is contained in:
Thomas Stuefe 2013-07-26 00:59:18 +02:00 committed by Goetz Lindenmaier
parent 1619c53530
commit a72b868ac2
5 changed files with 555 additions and 177 deletions
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58
hotspot/src/os/bsd/vm/os_bsd.cpp
View File

@ -1618,58 +1618,12 @@ void os::print_memory_info(outputStream* st) {
st->cr();
}
// Taken from /usr/include/bits/siginfo.h Supposed to be architecture specific
// but they're the same for all the bsd arch that we support
// and they're the same for solaris but there's no common place to put this.
const char *ill_names[] = { "ILL0", "ILL_ILLOPC", "ILL_ILLOPN", "ILL_ILLADR",
"ILL_ILLTRP", "ILL_PRVOPC", "ILL_PRVREG",
"ILL_COPROC", "ILL_BADSTK" };
const char *fpe_names[] = { "FPE0", "FPE_INTDIV", "FPE_INTOVF", "FPE_FLTDIV",
"FPE_FLTOVF", "FPE_FLTUND", "FPE_FLTRES",
"FPE_FLTINV", "FPE_FLTSUB", "FPE_FLTDEN" };
const char *segv_names[] = { "SEGV0", "SEGV_MAPERR", "SEGV_ACCERR" };
const char *bus_names[] = { "BUS0", "BUS_ADRALN", "BUS_ADRERR", "BUS_OBJERR" };
void os::print_siginfo(outputStream* st, void* siginfo) {
st->print("siginfo:");
const siginfo_t* si = (const siginfo_t*)siginfo;
const int buflen = 100;
char buf[buflen];
siginfo_t *si = (siginfo_t*)siginfo;
st->print("si_signo=%s: ", os::exception_name(si->si_signo, buf, buflen));
if (si->si_errno != 0 && strerror_r(si->si_errno, buf, buflen) == 0) {
st->print("si_errno=%s", buf);
} else {
st->print("si_errno=%d", si->si_errno);
}
const int c = si->si_code;
assert(c > 0, "unexpected si_code");
switch (si->si_signo) {
case SIGILL:
st->print(", si_code=%d (%s)", c, c > 8 ? "" : ill_names[c]);
st->print(", si_addr=" PTR_FORMAT, si->si_addr);
break;
case SIGFPE:
st->print(", si_code=%d (%s)", c, c > 9 ? "" : fpe_names[c]);
st->print(", si_addr=" PTR_FORMAT, si->si_addr);
break;
case SIGSEGV:
st->print(", si_code=%d (%s)", c, c > 2 ? "" : segv_names[c]);
st->print(", si_addr=" PTR_FORMAT, si->si_addr);
break;
case SIGBUS:
st->print(", si_code=%d (%s)", c, c > 3 ? "" : bus_names[c]);
st->print(", si_addr=" PTR_FORMAT, si->si_addr);
break;
default:
st->print(", si_code=%d", si->si_code);
// no si_addr
}
os::Posix::print_siginfo_brief(st, si);
if ((si->si_signo == SIGBUS || si->si_signo == SIGSEGV) &&
if (si && (si->si_signo == SIGBUS || si->si_signo == SIGSEGV) &&
UseSharedSpaces) {
FileMapInfo* mapinfo = FileMapInfo::current_info();
if (mapinfo->is_in_shared_space(si->si_addr)) {
@ -3338,7 +3292,8 @@ static void print_signal_handler(outputStream* st, int sig,
st->print("[%s]", get_signal_handler_name(handler, buf, buflen));
}
st->print(", sa_mask[0]=" PTR32_FORMAT, *(uint32_t*)&sa.sa_mask);
st->print(", sa_mask[0]=");
os::Posix::print_signal_set_short(st, &sa.sa_mask);
address rh = VMError::get_resetted_sighandler(sig);
// May be, handler was resetted by VMError?
@ -3347,7 +3302,8 @@ static void print_signal_handler(outputStream* st, int sig,
sa.sa_flags = VMError::get_resetted_sigflags(sig) & SIGNIFICANT_SIGNAL_MASK;
}
st->print(", sa_flags=" PTR32_FORMAT, sa.sa_flags);
st->print(", sa_flags=");
os::Posix::print_sa_flags(st, sa.sa_flags);
// Check: is it our handler?
if(handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)signalHandler) ||

58
hotspot/src/os/linux/vm/os_linux.cpp
View File

@ -2231,58 +2231,12 @@ void os::pd_print_cpu_info(outputStream* st) {
st->cr();
}
// Taken from /usr/include/bits/siginfo.h Supposed to be architecture specific
// but they're the same for all the linux arch that we support
// and they're the same for solaris but there's no common place to put this.
const char *ill_names[] = { "ILL0", "ILL_ILLOPC", "ILL_ILLOPN", "ILL_ILLADR",
"ILL_ILLTRP", "ILL_PRVOPC", "ILL_PRVREG",
"ILL_COPROC", "ILL_BADSTK" };
const char *fpe_names[] = { "FPE0", "FPE_INTDIV", "FPE_INTOVF", "FPE_FLTDIV",
"FPE_FLTOVF", "FPE_FLTUND", "FPE_FLTRES",
"FPE_FLTINV", "FPE_FLTSUB", "FPE_FLTDEN" };
const char *segv_names[] = { "SEGV0", "SEGV_MAPERR", "SEGV_ACCERR" };
const char *bus_names[] = { "BUS0", "BUS_ADRALN", "BUS_ADRERR", "BUS_OBJERR" };
void os::print_siginfo(outputStream* st, void* siginfo) {
st->print("siginfo:");
const siginfo_t* si = (const siginfo_t*)siginfo;
const int buflen = 100;
char buf[buflen];
siginfo_t *si = (siginfo_t*)siginfo;
st->print("si_signo=%s: ", os::exception_name(si->si_signo, buf, buflen));
if (si->si_errno != 0 && strerror_r(si->si_errno, buf, buflen) == 0) {
st->print("si_errno=%s", buf);
} else {
st->print("si_errno=%d", si->si_errno);
}
const int c = si->si_code;
assert(c > 0, "unexpected si_code");
switch (si->si_signo) {
case SIGILL:
st->print(", si_code=%d (%s)", c, c > 8 ? "" : ill_names[c]);
st->print(", si_addr=" PTR_FORMAT, si->si_addr);
break;
case SIGFPE:
st->print(", si_code=%d (%s)", c, c > 9 ? "" : fpe_names[c]);
st->print(", si_addr=" PTR_FORMAT, si->si_addr);
break;
case SIGSEGV:
st->print(", si_code=%d (%s)", c, c > 2 ? "" : segv_names[c]);
st->print(", si_addr=" PTR_FORMAT, si->si_addr);
break;
case SIGBUS:
st->print(", si_code=%d (%s)", c, c > 3 ? "" : bus_names[c]);
st->print(", si_addr=" PTR_FORMAT, si->si_addr);
break;
default:
st->print(", si_code=%d", si->si_code);
// no si_addr
}
os::Posix::print_siginfo_brief(st, si);
if ((si->si_signo == SIGBUS || si->si_signo == SIGSEGV) &&
if (si && (si->si_signo == SIGBUS || si->si_signo == SIGSEGV) &&
UseSharedSpaces) {
FileMapInfo* mapinfo = FileMapInfo::current_info();
if (mapinfo->is_in_shared_space(si->si_addr)) {
@ -4278,7 +4232,8 @@ static void print_signal_handler(outputStream* st, int sig,
st->print("[%s]", get_signal_handler_name(handler, buf, buflen));
}
st->print(", sa_mask[0]=" PTR32_FORMAT, *(uint32_t*)&sa.sa_mask);
st->print(", sa_mask[0]=");
os::Posix::print_signal_set_short(st, &sa.sa_mask);
address rh = VMError::get_resetted_sighandler(sig);
// May be, handler was resetted by VMError?
@ -4287,7 +4242,8 @@ static void print_signal_handler(outputStream* st, int sig,
sa.sa_flags = VMError::get_resetted_sigflags(sig) & SIGNIFICANT_SIGNAL_MASK;
}
st->print(", sa_flags=" PTR32_FORMAT, sa.sa_flags);
st->print(", sa_flags=");
os::Posix::print_sa_flags(st, sa.sa_flags);
// Check: is it our handler?
if(handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)signalHandler) ||

532
hotspot/src/os/posix/vm/os_posix.cpp
View File

@ -1,36 +1,44 @@
/*
* Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
* Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "utilities/globalDefinitions.hpp"
#include "prims/jvm.h"
#include "runtime/frame.inline.hpp"
#include "runtime/os.hpp"
#include "utilities/vmError.hpp"
#include <signal.h>
#include <unistd.h>
#include <sys/resource.h>
#include <sys/utsname.h>
// Todo: provide a os::get_max_process_id() or similar. Number of processes
// may have been configured, can be read more accurately from proc fs etc.
#ifndef MAX_PID
#define MAX_PID INT_MAX
#endif
#define IS_VALID_PID(p) (p > 0 && p < MAX_PID)
// Check core dump limit and report possible place where core can be found
void os::check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize) {
@ -156,7 +164,7 @@ void os::Posix::print_rlimit_info(outputStream* st) {
if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
else st->print("%uk", rlim.rlim_cur >> 10);
//Isn't there on solaris
// Isn't there on solaris
#ifndef TARGET_OS_FAMILY_solaris
st->print(", NPROC ");
getrlimit(RLIMIT_NPROC, &rlim);
@ -260,6 +268,484 @@ FILE* os::open(int fd, const char* mode) {
return ::fdopen(fd, mode);
}
// Returned string is a constant. For unknown signals "UNKNOWN" is returned.
const char* os::Posix::get_signal_name(int sig, char* out, size_t outlen) {
static const struct {
int sig; const char* name;
}
info[] =
{
{ SIGABRT, "SIGABRT" },
#ifdef SIGAIO
{ SIGAIO, "SIGAIO" },
#endif
{ SIGALRM, "SIGALRM" },
#ifdef SIGALRM1
{ SIGALRM1, "SIGALRM1" },
#endif
{ SIGBUS, "SIGBUS" },
#ifdef SIGCANCEL
{ SIGCANCEL, "SIGCANCEL" },
#endif
{ SIGCHLD, "SIGCHLD" },
#ifdef SIGCLD
{ SIGCLD, "SIGCLD" },
#endif
{ SIGCONT, "SIGCONT" },
#ifdef SIGCPUFAIL
{ SIGCPUFAIL, "SIGCPUFAIL" },
#endif
#ifdef SIGDANGER
{ SIGDANGER, "SIGDANGER" },
#endif
#ifdef SIGDIL
{ SIGDIL, "SIGDIL" },
#endif
#ifdef SIGEMT
{ SIGEMT, "SIGEMT" },
#endif
{ SIGFPE, "SIGFPE" },
#ifdef SIGFREEZE
{ SIGFREEZE, "SIGFREEZE" },
#endif
#ifdef SIGGFAULT
{ SIGGFAULT, "SIGGFAULT" },
#endif
#ifdef SIGGRANT
{ SIGGRANT, "SIGGRANT" },
#endif
{ SIGHUP, "SIGHUP" },
{ SIGILL, "SIGILL" },
{ SIGINT, "SIGINT" },
#ifdef SIGIO
{ SIGIO, "SIGIO" },
#endif
#ifdef SIGIOINT
{ SIGIOINT, "SIGIOINT" },
#endif
#ifdef SIGIOT
// SIGIOT is there for BSD compatibility, but on most Unices just a
// synonym for SIGABRT. The result should be "SIGABRT", not
// "SIGIOT".
#if (SIGIOT != SIGABRT )
{ SIGIOT, "SIGIOT" },
#endif
#endif
#ifdef SIGKAP
{ SIGKAP, "SIGKAP" },
#endif
{ SIGKILL, "SIGKILL" },
#ifdef SIGLOST
{ SIGLOST, "SIGLOST" },
#endif
#ifdef SIGLWP
{ SIGLWP, "SIGLWP" },
#endif
#ifdef SIGLWPTIMER
{ SIGLWPTIMER, "SIGLWPTIMER" },
#endif
#ifdef SIGMIGRATE
{ SIGMIGRATE, "SIGMIGRATE" },
#endif
#ifdef SIGMSG
{ SIGMSG, "SIGMSG" },
#endif
{ SIGPIPE, "SIGPIPE" },
#ifdef SIGPOLL
{ SIGPOLL, "SIGPOLL" },
#endif
#ifdef SIGPRE
{ SIGPRE, "SIGPRE" },
#endif
{ SIGPROF, "SIGPROF" },
#ifdef SIGPTY
{ SIGPTY, "SIGPTY" },
#endif
#ifdef SIGPWR
{ SIGPWR, "SIGPWR" },
#endif
{ SIGQUIT, "SIGQUIT" },
#ifdef SIGRECONFIG
{ SIGRECONFIG, "SIGRECONFIG" },
#endif
#ifdef SIGRECOVERY
{ SIGRECOVERY, "SIGRECOVERY" },
#endif
#ifdef SIGRESERVE
{ SIGRESERVE, "SIGRESERVE" },
#endif
#ifdef SIGRETRACT
{ SIGRETRACT, "SIGRETRACT" },
#endif
#ifdef SIGSAK
{ SIGSAK, "SIGSAK" },
#endif
{ SIGSEGV, "SIGSEGV" },
#ifdef SIGSOUND
{ SIGSOUND, "SIGSOUND" },
#endif
{ SIGSTOP, "SIGSTOP" },
{ SIGSYS, "SIGSYS" },
#ifdef SIGSYSERROR
{ SIGSYSERROR, "SIGSYSERROR" },
#endif
#ifdef SIGTALRM
{ SIGTALRM, "SIGTALRM" },
#endif
{ SIGTERM, "SIGTERM" },
#ifdef SIGTHAW
{ SIGTHAW, "SIGTHAW" },
#endif
{ SIGTRAP, "SIGTRAP" },
#ifdef SIGTSTP
{ SIGTSTP, "SIGTSTP" },
#endif
{ SIGTTIN, "SIGTTIN" },
{ SIGTTOU, "SIGTTOU" },
#ifdef SIGURG
{ SIGURG, "SIGURG" },
#endif
{ SIGUSR1, "SIGUSR1" },
{ SIGUSR2, "SIGUSR2" },
#ifdef SIGVIRT
{ SIGVIRT, "SIGVIRT" },
#endif
{ SIGVTALRM, "SIGVTALRM" },
#ifdef SIGWAITING
{ SIGWAITING, "SIGWAITING" },
#endif
#ifdef SIGWINCH
{ SIGWINCH, "SIGWINCH" },
#endif
#ifdef SIGWINDOW
{ SIGWINDOW, "SIGWINDOW" },
#endif
{ SIGXCPU, "SIGXCPU" },
{ SIGXFSZ, "SIGXFSZ" },
#ifdef SIGXRES
{ SIGXRES, "SIGXRES" },
#endif
{ -1, NULL }
};
const char* ret = NULL;
#ifdef SIGRTMIN
if (sig >= SIGRTMIN && sig <= SIGRTMAX) {
if (sig == SIGRTMIN) {
ret = "SIGRTMIN";
} else if (sig == SIGRTMAX) {
ret = "SIGRTMAX";
} else {
jio_snprintf(out, outlen, "SIGRTMIN+%d", sig - SIGRTMIN);
return out;
}
}
#endif
if (sig > 0) {
for (int idx = 0; info[idx].sig != -1; idx ++) {
if (info[idx].sig == sig) {
ret = info[idx].name;
break;
}
}
}
if (!ret) {
if (!is_valid_signal(sig)) {
ret = "INVALID";
} else {
ret = "UNKNOWN";
}
}
jio_snprintf(out, outlen, ret);
return out;
}
// Returns true if signal number is valid.
bool os::Posix::is_valid_signal(int sig) {
// MacOS not really POSIX compliant: sigaddset does not return
// an error for invalid signal numbers. However, MacOS does not
// support real time signals and simply seems to have just 33
// signals with no holes in the signal range.
#ifdef __APPLE__
return sig >= 1 && sig < NSIG;
#else
// Use sigaddset to check for signal validity.
sigset_t set;
if (sigaddset(&set, sig) == -1 && errno == EINVAL) {
return false;
}
return true;
#endif
}
#define NUM_IMPORTANT_SIGS 32
// Returns one-line short description of a signal set in a user provided buffer.
const char* os::Posix::describe_signal_set_short(const sigset_t* set, char* buffer, size_t buf_size) {
assert(buf_size = (NUM_IMPORTANT_SIGS + 1), "wrong buffer size");
// Note: for shortness, just print out the first 32. That should
// cover most of the useful ones, apart from realtime signals.
for (int sig = 1; sig <= NUM_IMPORTANT_SIGS; sig++) {
const int rc = sigismember(set, sig);
if (rc == -1 && errno == EINVAL) {
buffer[sig-1] = '?';
} else {
buffer[sig-1] = rc == 0 ? '0' : '1';
}
}
buffer[NUM_IMPORTANT_SIGS] = 0;
return buffer;
}
// Prints one-line description of a signal set.
void os::Posix::print_signal_set_short(outputStream* st, const sigset_t* set) {
char buf[NUM_IMPORTANT_SIGS + 1];
os::Posix::describe_signal_set_short(set, buf, sizeof(buf));
st->print(buf);
}
// Writes one-line description of a combination of sigaction.sa_flags into a user
// provided buffer. Returns that buffer.
const char* os::Posix::describe_sa_flags(int flags, char* buffer, size_t size) {
char* p = buffer;
size_t remaining = size;
bool first = true;
int idx = 0;
assert(buffer, "invalid argument");
if (size == 0) {
return buffer;
}
strncpy(buffer, "none", size);
const struct {
int i;
const char* s;
} flaginfo [] = {
{ SA_NOCLDSTOP, "SA_NOCLDSTOP" },
{ SA_ONSTACK, "SA_ONSTACK" },
{ SA_RESETHAND, "SA_RESETHAND" },
{ SA_RESTART, "SA_RESTART" },
{ SA_SIGINFO, "SA_SIGINFO" },
{ SA_NOCLDWAIT, "SA_NOCLDWAIT" },
{ SA_NODEFER, "SA_NODEFER" },
#ifdef AIX
{ SA_ONSTACK, "SA_ONSTACK" },
{ SA_OLDSTYLE, "SA_OLDSTYLE" },
#endif
{ 0, NULL }
};
for (idx = 0; flaginfo[idx].s && remaining > 1; idx++) {
if (flags & flaginfo[idx].i) {
if (first) {
jio_snprintf(p, remaining, "%s", flaginfo[idx].s);
first = false;
} else {
jio_snprintf(p, remaining, "|%s", flaginfo[idx].s);
}
const size_t len = strlen(p);
p += len;
remaining -= len;
}
}
buffer[size - 1] = '\0';
return buffer;
}
// Prints one-line description of a combination of sigaction.sa_flags.
void os::Posix::print_sa_flags(outputStream* st, int flags) {
char buffer[0x100];
os::Posix::describe_sa_flags(flags, buffer, sizeof(buffer));
st->print(buffer);
}
// Helper function for os::Posix::print_siginfo_...():
// return a textual description for signal code.
struct enum_sigcode_desc_t {
const char* s_name;
const char* s_desc;
};
static bool get_signal_code_description(const siginfo_t* si, enum_sigcode_desc_t* out) {
const struct {
int sig; int code; const char* s_code; const char* s_desc;
} t1 [] = {
{ SIGILL, ILL_ILLOPC, "ILL_ILLOPC", "Illegal opcode." },
{ SIGILL, ILL_ILLOPN, "ILL_ILLOPN", "Illegal operand." },
{ SIGILL, ILL_ILLADR, "ILL_ILLADR", "Illegal addressing mode." },
{ SIGILL, ILL_ILLTRP, "ILL_ILLTRP", "Illegal trap." },
{ SIGILL, ILL_PRVOPC, "ILL_PRVOPC", "Privileged opcode." },
{ SIGILL, ILL_PRVREG, "ILL_PRVREG", "Privileged register." },
{ SIGILL, ILL_COPROC, "ILL_COPROC", "Coprocessor error." },
{ SIGILL, ILL_BADSTK, "ILL_BADSTK", "Internal stack error." },
#if defined(IA64) && defined(LINUX)
{ SIGILL, ILL_BADIADDR, "ILL_BADIADDR", "Unimplemented instruction address" },
{ SIGILL, ILL_BREAK, "ILL_BREAK", "Application Break instruction" },
#endif
{ SIGFPE, FPE_INTDIV, "FPE_INTDIV", "Integer divide by zero." },
{ SIGFPE, FPE_INTOVF, "FPE_INTOVF", "Integer overflow." },
{ SIGFPE, FPE_FLTDIV, "FPE_FLTDIV", "Floating-point divide by zero." },
{ SIGFPE, FPE_FLTOVF, "FPE_FLTOVF", "Floating-point overflow." },
{ SIGFPE, FPE_FLTUND, "FPE_FLTUND", "Floating-point underflow." },
{ SIGFPE, FPE_FLTRES, "FPE_FLTRES", "Floating-point inexact result." },
{ SIGFPE, FPE_FLTINV, "FPE_FLTINV", "Invalid floating-point operation." },
{ SIGFPE, FPE_FLTSUB, "FPE_FLTSUB", "Subscript out of range." },
{ SIGSEGV, SEGV_MAPERR, "SEGV_MAPERR", "Address not mapped to object." },
{ SIGSEGV, SEGV_ACCERR, "SEGV_ACCERR", "Invalid permissions for mapped object." },
#ifdef AIX
// no explanation found what keyerr would be
{ SIGSEGV, SEGV_KEYERR, "SEGV_KEYERR", "key error" },
#endif
#if defined(IA64) && !defined(AIX)
{ SIGSEGV, SEGV_PSTKOVF, "SEGV_PSTKOVF", "Paragraph stack overflow" },
#endif
{ SIGBUS, BUS_ADRALN, "BUS_ADRALN", "Invalid address alignment." },
{ SIGBUS, BUS_ADRERR, "BUS_ADRERR", "Nonexistent physical address." },
{ SIGBUS, BUS_OBJERR, "BUS_OBJERR", "Object-specific hardware error." },
{ SIGTRAP, TRAP_BRKPT, "TRAP_BRKPT", "Process breakpoint." },
{ SIGTRAP, TRAP_TRACE, "TRAP_TRACE", "Process trace trap." },
{ SIGCHLD, CLD_EXITED, "CLD_EXITED", "Child has exited." },
{ SIGCHLD, CLD_KILLED, "CLD_KILLED", "Child has terminated abnormally and did not create a core file." },
{ SIGCHLD, CLD_DUMPED, "CLD_DUMPED", "Child has terminated abnormally and created a core file." },
{ SIGCHLD, CLD_TRAPPED, "CLD_TRAPPED", "Traced child has trapped." },
{ SIGCHLD, CLD_STOPPED, "CLD_STOPPED", "Child has stopped." },
{ SIGCHLD, CLD_CONTINUED,"CLD_CONTINUED","Stopped child has continued." },
#ifdef SIGPOLL
{ SIGPOLL, POLL_OUT, "POLL_OUT", "Output buffers available." },
{ SIGPOLL, POLL_MSG, "POLL_MSG", "Input message available." },
{ SIGPOLL, POLL_ERR, "POLL_ERR", "I/O error." },
{ SIGPOLL, POLL_PRI, "POLL_PRI", "High priority input available." },
{ SIGPOLL, POLL_HUP, "POLL_HUP", "Device disconnected. [Option End]" },
#endif
{ -1, -1, NULL, NULL }
};
// Codes valid in any signal context.
const struct {
int code; const char* s_code; const char* s_desc;
} t2 [] = {
{ SI_USER, "SI_USER", "Signal sent by kill()." },
{ SI_QUEUE, "SI_QUEUE", "Signal sent by the sigqueue()." },
{ SI_TIMER, "SI_TIMER", "Signal generated by expiration of a timer set by timer_settime()." },
{ SI_ASYNCIO, "SI_ASYNCIO", "Signal generated by completion of an asynchronous I/O request." },
{ SI_MESGQ, "SI_MESGQ", "Signal generated by arrival of a message on an empty message queue." },
// Linux specific
#ifdef SI_TKILL
{ SI_TKILL, "SI_TKILL", "Signal sent by tkill (pthread_kill)" },
#endif
#ifdef SI_DETHREAD
{ SI_DETHREAD, "SI_DETHREAD", "Signal sent by execve() killing subsidiary threads" },
#endif
#ifdef SI_KERNEL
{ SI_KERNEL, "SI_KERNEL", "Signal sent by kernel." },
#endif
#ifdef SI_SIGIO
{ SI_SIGIO, "SI_SIGIO", "Signal sent by queued SIGIO" },
#endif
#ifdef AIX
{ SI_UNDEFINED, "SI_UNDEFINED","siginfo contains partial information" },
{ SI_EMPTY, "SI_EMPTY", "siginfo contains no useful information" },
#endif
#ifdef __sun
{ SI_NOINFO, "SI_NOINFO", "No signal information" },
{ SI_RCTL, "SI_RCTL", "kernel generated signal via rctl action" },
{ SI_LWP, "SI_LWP", "Signal sent via lwp_kill" },
#endif
{ -1, NULL, NULL }
};
const char* s_code = NULL;
const char* s_desc = NULL;
for (int i = 0; t1[i].sig != -1; i ++) {
if (t1[i].sig == si->si_signo && t1[i].code == si->si_code) {
s_code = t1[i].s_code;
s_desc = t1[i].s_desc;
break;
}
}
if (s_code == NULL) {
for (int i = 0; t2[i].s_code != NULL; i ++) {
if (t2[i].code == si->si_code) {
s_code = t2[i].s_code;
s_desc = t2[i].s_desc;
}
}
}
if (s_code == NULL) {
out->s_name = "unknown";
out->s_desc = "unknown";
return false;
}
out->s_name = s_code;
out->s_desc = s_desc;
return true;
}
// A POSIX conform, platform-independend siginfo print routine.
// Short print out on one line.
void os::Posix::print_siginfo_brief(outputStream* os, const siginfo_t* si) {
char buf[20];
os->print("siginfo: ");
if (!si) {
os->print("<null>");
return;
}
// See print_siginfo_full() for details.
const int sig = si->si_signo;
os->print("si_signo: %d (%s)", sig, os::Posix::get_signal_name(sig, buf, sizeof(buf)));
enum_sigcode_desc_t ed;
if (get_signal_code_description(si, &ed)) {
os->print(", si_code: %d (%s)", si->si_code, ed.s_name);
} else {
os->print(", si_code: %d (unknown)", si->si_code);
}
if (si->si_errno) {
os->print(", si_errno: %d", si->si_errno);
}
const int me = (int) ::getpid();
const int pid = (int) si->si_pid;
if (si->si_code == SI_USER || si->si_code == SI_QUEUE) {
if (IS_VALID_PID(pid) && pid != me) {
os->print(", sent from pid: %d (uid: %d)", pid, (int) si->si_uid);
}
} else if (sig == SIGSEGV || sig == SIGBUS || sig == SIGILL ||
sig == SIGTRAP || sig == SIGFPE) {
os->print(", si_addr: " PTR_FORMAT, si->si_addr);
#ifdef SIGPOLL
} else if (sig == SIGPOLL) {
os->print(", si_band: " PTR64_FORMAT, (uint64_t)si->si_band);
#endif
} else if (sig == SIGCHLD) {
os->print_cr(", si_pid: %d, si_uid: %d, si_status: %d", (int) si->si_pid, si->si_uid, si->si_status);
}
}
os::WatcherThreadCrashProtection::WatcherThreadCrashProtection() {
assert(Thread::current()->is_Watcher_thread(), "Must be WatcherThread");
}

26
hotspot/src/os/posix/vm/os_posix.hpp
View File

@ -34,6 +34,30 @@ protected:
static void print_libversion_info(outputStream* st);
static void print_load_average(outputStream* st);
public:
// Returns true if signal is valid.
static bool is_valid_signal(int sig);
// Helper function, returns a string (e.g. "SIGILL") for a signal.
// Returned string is a constant. For unknown signals "UNKNOWN" is returned.
static const char* get_signal_name(int sig, char* out, size_t outlen);
// Returns one-line short description of a signal set in a user provided buffer.
static const char* describe_signal_set_short(const sigset_t* set, char* buffer, size_t size);
// Prints a short one-line description of a signal set.
static void print_signal_set_short(outputStream* st, const sigset_t* set);
// Writes a one-line description of a combination of sigaction.sa_flags
// into a user provided buffer. Returns that buffer.
static const char* describe_sa_flags(int flags, char* buffer, size_t size);
// Prints a one-line description of a combination of sigaction.sa_flags.
static void print_sa_flags(outputStream* st, int flags);
// A POSIX conform, platform-independend siginfo print routine.
static void print_siginfo_brief(outputStream* os, const siginfo_t* si);
};
@ -57,4 +81,4 @@ private:
sigjmp_buf _jmpbuf;
};
#endif
#endif // OS_POSIX_VM_OS_POSIX_HPP

58
hotspot/src/os/solaris/vm/os_solaris.cpp
View File

@ -2247,58 +2247,12 @@ void os::print_memory_info(outputStream* st) {
(void) check_addr0(st);
}
// Taken from /usr/include/sys/machsig.h Supposed to be architecture specific
// but they're the same for all the solaris architectures that we support.
const char *ill_names[] = { "ILL0", "ILL_ILLOPC", "ILL_ILLOPN", "ILL_ILLADR",
"ILL_ILLTRP", "ILL_PRVOPC", "ILL_PRVREG",
"ILL_COPROC", "ILL_BADSTK" };
const char *fpe_names[] = { "FPE0", "FPE_INTDIV", "FPE_INTOVF", "FPE_FLTDIV",
"FPE_FLTOVF", "FPE_FLTUND", "FPE_FLTRES",
"FPE_FLTINV", "FPE_FLTSUB" };
const char *segv_names[] = { "SEGV0", "SEGV_MAPERR", "SEGV_ACCERR" };
const char *bus_names[] = { "BUS0", "BUS_ADRALN", "BUS_ADRERR", "BUS_OBJERR" };
void os::print_siginfo(outputStream* st, void* siginfo) {
st->print("siginfo:");
const siginfo_t* si = (const siginfo_t*)siginfo;
const int buflen = 100;
char buf[buflen];
siginfo_t *si = (siginfo_t*)siginfo;
st->print("si_signo=%s: ", os::exception_name(si->si_signo, buf, buflen));
char *err = strerror(si->si_errno);
if (si->si_errno != 0 && err != NULL) {
st->print("si_errno=%s", err);
} else {
st->print("si_errno=%d", si->si_errno);
}
const int c = si->si_code;
assert(c > 0, "unexpected si_code");
switch (si->si_signo) {
case SIGILL:
st->print(", si_code=%d (%s)", c, c > 8 ? "" : ill_names[c]);
st->print(", si_addr=" PTR_FORMAT, si->si_addr);
break;
case SIGFPE:
st->print(", si_code=%d (%s)", c, c > 9 ? "" : fpe_names[c]);
st->print(", si_addr=" PTR_FORMAT, si->si_addr);
break;
case SIGSEGV:
st->print(", si_code=%d (%s)", c, c > 2 ? "" : segv_names[c]);
st->print(", si_addr=" PTR_FORMAT, si->si_addr);
break;
case SIGBUS:
st->print(", si_code=%d (%s)", c, c > 3 ? "" : bus_names[c]);
st->print(", si_addr=" PTR_FORMAT, si->si_addr);
break;
default:
st->print(", si_code=%d", si->si_code);
// no si_addr
}
os::Posix::print_siginfo_brief(st, si);
if ((si->si_signo == SIGBUS || si->si_signo == SIGSEGV) &&
if (si && (si->si_signo == SIGBUS || si->si_signo == SIGSEGV) &&
UseSharedSpaces) {
FileMapInfo* mapinfo = FileMapInfo::current_info();
if (mapinfo->is_in_shared_space(si->si_addr)) {
@ -2368,7 +2322,8 @@ static void print_signal_handler(outputStream* st, int sig,
st->print("[%s]", get_signal_handler_name(handler, buf, buflen));
}
st->print(", sa_mask[0]=" PTR32_FORMAT, *(uint32_t*)&sa.sa_mask);
st->print(", sa_mask[0]=");
os::Posix::print_signal_set_short(st, &sa.sa_mask);
address rh = VMError::get_resetted_sighandler(sig);
// May be, handler was resetted by VMError?
@ -2377,7 +2332,8 @@ static void print_signal_handler(outputStream* st, int sig,
sa.sa_flags = VMError::get_resetted_sigflags(sig);
}
st->print(", sa_flags=" PTR32_FORMAT, sa.sa_flags);
st->print(", sa_flags=");
os::Posix::print_sa_flags(st, sa.sa_flags);
// Check: is it our handler?
if(handler == CAST_FROM_FN_PTR(address, signalHandler) ||